Pecan Weevil Presentation – Awinash

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WELCOME! QUARANTINE STATUTES AND RULES Awinash P. Bhatkar, Ph.D. Coordinator for Biosecurity & Agriculture Resource Management Texas Administrative Code Chapter 19, Subchapter L Pecan Weevil Quarantine §19.120 Quarantined Pest The quarantined pest is the Pecan Weevil, Curculio caryae (Horn). ________________________________________ Source Note: The provisions of this §19.120 adopted to be effective September 2, 1996, 21 TexReg 7806. §19.121 Quarantined Areas The quarantined areas are: (1) Eddy and Chaves Counties, New Mexico, and all other states and districts of the United States except Arizona, California, and the remainder of New Mexico; (2) all areas in the State of Texas except the counties of El Paso, Hudspeth, Culberson, Jeff Davis, and Presidio. ________________________________________ Source Note: The provisions of this §19.121 adopted to be effective September 2, 1996, 21 TexReg 7806. (a) General. Quarantined articles originating from quarantined areas are prohibited entry into or through the free areas of Texas listed in this subchapter, except as provided in subsections (b) and (c) of this section. (b) Exemptions. Movement of quarantined articles to a sheller or processing plant for treatment or further processing may be granted upon departmental review. (c) Exceptions. All quarantined articles must be free of husk and accompanied by a state certificate certifying that the products were treated in the following manner: (1) dipped in water at a temperature of at least 140 degrees Fahrenheit for 30 seconds. It is not necessary to dip the parts of a tree that will be below ground level; or (2) held at a temperature of 0 degrees Fahrenheit for a period of 168 consecutive hours or longer after the entire lot has reached the desired temperature; or (3) alternate treatments may be approved upon departmental review. ________________________________________ Source Note: The provisions of this §19.123 adopted to be effective September 2, 1996, 21 TexReg 7806. Pecan Weevil Quarantine (Curculio caryae) • All hickory, pecan, walnut plants or parts, except extracted nut meat (free of husk) • Exceptions: – Hot water treated (140o F for 30 seconds) – Cold treated (0o F for < 168 hours) • Commodities from CA, AZ,and NM (except infested Eddy and Chaves counties) Pecan weevil damage Larvae are 3/5 inch cream colored, legless grubs with red heads; 3 to 4 grubs may be found in a single nut. Laval emergence hole in a nut .

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Sunday, March 4, 2012
Joint Meeting of the Southeastern and Southwestern Branches Entomological Society of America 4-7 March 2012 Little Rock, Arkansas 0 Dr. Norman C. Leppla President, Southeastern Branch of the Entomological Society of America, 2011-2012 Dr. Allen E. Knutson President, Southwestern Branch of the Entomological Society of America, 2011-2012 1 2 TABLE OF CONTENTS Presidents Norman C. Leppla (SEB) and Allen E. 1 Knutson (SWB) ESA Section Names and Acronyms 5 PROGRAM SUMMARY 6 Meeting Notices and Policies 11 SEB Officers and Committees: 2011-2012 14 SWB Officers and Committees: 2011-2012 16 SEB Award Recipients 19 SWB Award Recipients 36 SCIENTIFIC PROGRAM SATURDAY AND SUNDAY SUMMARY 44 MONDAY SUMMARY 45 Plenary Session 47 BS Student Oral Competition 48 MS Student Oral Competition I 49 MS Student Oral Competition II 50 MS Student Oral Competition III 52 MS Student Oral Competition IV 53 PhD Student Oral Competition I 54 PhD Student Oral Competition II 56 BS Student Poster Competition 57 MS Student Poster Competition 59 PhD Student Poster Competition 62 Linnaean Games Finals/Student Awards 64 TUESDAY SUMMARY 65 Contributed Papers: P-IE (Soybeans and Stink Bugs) 67 Symposium: Spotted Wing Drosophila in the Southeast 68 Armyworm Symposium 69 Symposium: Functional Genomics of Tick-Pathogen 70 Interface Contributed Papers: PBT and SEB Sections 71 Contributed Papers: P-IE (Cotton and Corn) 72 Turf and Ornamentals Symposium 73 Joint Awards Ceremony, Luncheon, and Photo Salon 74 Contributed Papers: MUVE Section 75 3 Symposium: Biological Control Success
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Nut Weevils Ric Bessin, Extension Specialist Entfact-206
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Thesis-1980D-H178d.Pdf (5.243Mb)
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Table 2. Control Methods for the Eight Major Pecan Arthropod Pests in North America
% Mortality = 100 (1 – (1 (SR RC)GT)). Pest* Reproductive Capacity Generation Time % Mortality Pecan weevil 75 eggs/female .33 or .50 gen/yr 30 – 53/season** Pecan nut casebearer 50-150 eggs/female 2 gen/yr 99-99.9/season Hickory shuckworm unknown 2-5 gen/yr unknown Black pecan aphid 35 nymphs/female 26 gen/yr 99.9/season Yellow pecan aphid 38 nymphs/female 32 gen/yr 99.9/season Black margined aphid 125 nymphs/female 16 gen/yr 99.9/season Pecan leaf scorch mite 9-36 eggs/female 7-8 gen/yr 99.9/season Fall webworm 300-1000 eggs/female 4 gen/yr*** 98-99.9/season Walnut caterpillar 120-880 eggs/female 2 gen/yr 99-99.9/season * Kernel feeding hemipterans are not listed since they invade the orchard and do not breed in the orchard. ** 97.3 % mortality per generation is required to prevent pecan weevils from increasing in the orchard. 30 % (53%) mortality per year will control weevils with a 3 (2) year life cycle. *** 2 overlapping broods occur each season. Table 2. Control methods for the eight major pecan arthropod pests in North America. Pest Control method for pest Relative efficacy Pecan weevil Broad spectrum insecticides High Curculio caryae (Horn) Quarantine High Risk rating and spot treatment Moderate Trunk treatment Moderate Red imported fire ant as predator Low Pecan nut casebearer Broad spectrum insecticides High Acrobasis nuxvorella Biorational insecticides High (Neunzig) Mating disruption Low Hickory shuckworm Broad spectrum insecticides High Cydia caryana Fitch Biorational insecticides High Sanitation Moderate Black pecan aphid
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